1. Division of Neurology Tohoku Medical and Pharmaceutical University Sendai Japan
2. Department of Multiple Sclerosis Therapeutics Tohoku University Graduate School of Medicine Sendai Japan
3. Department of Multiple Sclerosis Therapeutics Fukushima Medical University School of Medicine and Multiple Sclerosis and Neuromyelitis Optica Center Southern Tohoku Research Institute for Neuroscience Koriyama Japan
4. Department of Diagnostic and Interventional Neuroradiology Hannover Medical School Hannover Germany